C11111333133313232233133313331333133313232233312111111331312231   >>    C1111133313331323223313331333133313331323223331211111133131223   <<    C11111333133313232233133313331333133313232233312111111331312233   >>      C11111333133313232233133313331333133313232233312111111331312232   >>