diff --git a/src/standaloneUtils/rmDuplicates.js b/src/standaloneUtils/rmDuplicates.js
index 6258993..7631204 100644
--- a/src/standaloneUtils/rmDuplicates.js
+++ b/src/standaloneUtils/rmDuplicates.js
@@ -3,6 +3,28 @@ const logger = require('../../dist/utils/logger.js').default // eslint-disable-l
 const { addQuestion, doSearch } = require('../../dist/utils/classes.js') // eslint-disable-line
 const { loadData } = require('../../dist/utils/actions.js') // eslint-disable-line
 
+// Params [ 'publicDirs/qminingPublic/questionDbs/elektro.json' ]
+// ==============================================================================================
+// 1 / 1: Elektronika, 826 questions
+// Result length: 0, original length: 826
+//  [=====================================================================] 826 / 826
+// Removed 11 questions
+// ==============================================================================================
+// Result length: 815, original length: 826, removed 11 questions
+// File written
+
+// load: 15.605ms
+// Removing duplicate questions from publicDirs/qminingPublic/questionDbs/elektro.json
+// ==============================================================================================
+// 1 / 1: Elektronika, 826 questions
+// Result length: 0, original length: 826
+//  [=====================================================================] 826 / 826
+// Removed 160 questions
+// ==============================================================================================
+// Result length: 666, original length: 826, removed 160 questions
+// rmduplicates: 569.828ms
+// File written
+
 const minpercent = 95
 const resultDbFileName = 'res.json'
 const line =
diff --git a/src/types/basicTypes.ts b/src/types/basicTypes.ts
index 5346df2..585db75 100644
--- a/src/types/basicTypes.ts
+++ b/src/types/basicTypes.ts
@@ -11,8 +11,8 @@ export interface Question {
   A: string
   data: QuestionData
   cache?: {
-    Q: string
-    A: string
+    Q: Array<string>
+    A: Array<string>
   }
 }
 
diff --git a/src/utils/classes.ts b/src/utils/classes.ts
index 6ca9edd..a637034 100755
--- a/src/utils/classes.ts
+++ b/src/utils/classes.ts
@@ -84,16 +84,24 @@ function removeUnnecesarySpaces(toremove: string) {
   return normalizeSpaces(toremove).replace(/\s+/g, ' ')
 }
 
-function compareString(s1, s2) {
-  if (!s1 || !s2) {
-    if (!s1 && !s2) {
+function compareString(
+  s1: string,
+  s1a: Array<string>,
+  s2: string,
+  s2a: Array<string>
+): number {
+  if (s1 === s2) {
+    return 100
+  }
+  if (!s1a || !s2a) {
+    if (!s1a && !s2a) {
       return 100
     } else {
       return 0
     }
   }
-  if (s1.length < 0 || s2.length < 0) {
-    if (s1.length === 0 && s2.length === 0) {
+  if (s1a.length < 0 || s2a.length < 0) {
+    if (s1a.length === 0 && s2a.length === 0) {
       return 100
     } else {
       return 0
@@ -101,15 +109,15 @@ function compareString(s1, s2) {
   }
 
   let match = 0
-  let lastMatchIndex = -1
+  let lastMatchIndex = -2
   let i = 0
 
-  while (i < s1.length) {
+  while (i < s1a.length) {
     if (match / i < magicNumber) {
       break
     }
 
-    const currMatchIndex = s2.indexOf(s1[i])
+    const currMatchIndex = s2a.indexOf(s1a[i])
     if (lastMatchIndex < currMatchIndex) {
       match++
       lastMatchIndex = currMatchIndex
@@ -118,8 +126,8 @@ function compareString(s1, s2) {
     i++
   }
 
-  let percent = Math.round(parseFloat(((match / s1.length) * 100).toFixed(2)))
-  const lengthDifference = Math.abs(s2.length - s1.length)
+  let percent = Math.round(parseFloat(((match / s1a.length) * 100).toFixed(2)))
+  const lengthDifference = Math.abs(s2a.length - s1a.length)
   percent -= lengthDifference * lengthDiffMultiplier
   if (percent < 0) {
     percent = 0
@@ -230,10 +238,19 @@ function compareImage(data: QuestionData, data2: QuestionData) {
   if (data.hashedImages && data2.hashedImages) {
     return compareString(
       data.hashedImages.join(' '),
-      data.hashedImages.join(' ')
+      data.hashedImages,
+      data2.hashedImages.join(' '),
+      data2.hashedImages
     )
   } else if (data.images && data2.images) {
-    return compareString(data.images.join(' '), data2.images.join(' ')) - 10
+    return (
+      compareString(
+        data.images.join(' '),
+        data.images,
+        data2.images.join(' '),
+        data2.images
+      ) - 10
+    )
   } else {
     return 0
   }
@@ -268,11 +285,11 @@ function compareData(q1: Question, q2: Question) {
 }
 
 function compareQuestion(q1: Question, q2: Question) {
-  return compareString(q1.cache.Q, q2.cache.Q)
+  return compareString(q1.Q, q1.cache.Q, q2.Q, q2.cache.Q)
 }
 
 function compareAnswer(q1: Question, q2: Question) {
-  return compareString(q1.cache.A, q2.cache.A)
+  return compareString(q1.A, q1.cache.A, q2.A, q2.cache.A)
 }
 
 function compareQuestionObj(