C11111333133313232233133313331333133313231312111111331311233312231   >>    C1111133313331323223313331333133313331323131211111133131123331223   <<    C11111333133313232233133313331333133313231312111111331311233312233   >>      C11111333133313232233133313331333133313231312111111331311233312232   >>