C1111233131211111211113313331333133313331322322331312111113231322123231   >>    C111123313121111121111331333133313331333132232233131211111323132212323   <<    C1111233131211111211113313331333133313331322322331312111113231322123233   >>      C1111233131211111211113313331333133313331322322331312111113231322123232   >>