C11111333133313232233133313331333133313231312111133131323211311   >>    C1111133313331323223313331333133313331323131211113313132321131   <<    C11111333133313232233133313331333133313231312111133131323211313   >>      C11111333133313232233133313331333133313231312111133131323211312   >>