C1111233131211111211113313331333133313331322322331311221123231321231   >>    C111123313121111121111331333133313331333132232233131122112323132123   <<    C1111233131211111211113313331333133313331322322331311221123231321233   >>      C1111233131211111211113313331333133313331322322331311221123231321232   >>