Database
[{/**"_id": ObjectId("abc123..."),*/"Lines":["string 1","string 2","string 3","string 4",/**"...",*/"string 100"]}]
Query
db.collection.find({},{Lines2:{$filter:{input:"$Lines",cond:{$in:[{$indexOfArray:["$Lines","$$this"]},[0,1,/** Replace with 6*/3/** Replace with 14*/]]}}}})