override fun doInBackground(vararg params: Void?): ArrayList<String>? {
            if (!mvpView.checkForPermissions()) return null
            var selection = "address LIKE '%${template.phoneNumb}%'"
            val cursor = context.contentResolver.query(Uri.parse("content://sms/inbox"), null, selection, null, null)

            var count:Int = 0
            var samePhoneNumbers = ArrayList<TemplateItem>()
            if (cursor != null && cursor.moveToFirst()) { // must check the result to prevent exception
                count = cursor.count
                var item:TemplateItem
                for (idx in 1..count) {
                    if (cursor.moveToPosition(idx)) {
                        item = TemplateItem()
                        item.phoneNumb = cursor.getString(cursor.getColumnIndexOrThrow("address"))
                        item.name = item.phoneNumb
                        item.text = cursor.getString(cursor.getColumnIndexOrThrow("body"))
                        samePhoneNumbers.add(item)
                    }
                }
            }
            if (samePhoneNumbers.isEmpty()) return null
            sameWordsList = ArrayList<ArrayList<String>>()
            coincidenceCount = 0
            samePhoneNumbers.forEachIndexed { i, spni ->
                Converter.findNotMatching(template.text, spni.text)?.let {
                    sameWordsList.add(it)
                    if (sameWordsList.size >1) {
                        for (k in sameWordsList.size-2..sameWordsList.size - 1) {
                            var same = true
                            sameWordsList[0].forEachIndexed { i, s ->
                                if (sameWordsList[k].size > i && s == sameWordsList[k][i]){
                                    same = same && true
                                } else {
                                    same = same && false
                                }
                            }
                            if (same && sameWordsList[0].size >0){
                                coincidenceCount++
                            }
                        }
                    }
                    if(coincidenceCount >=3){
                        return sameWordsList[0]
                    }
                }
            }
            if (coincidenceCount >0){
                return sameWordsList[0]
            }
            return null
        }