C11111333133313232233133313331333133313231312111133232213233331   >>    C1111133313331323223313331333133313331323131211113323221323333   <<    C11111333133313232233133313331333133313231312111133232213233333   >>      C11111333133313232233133313331333133313231312111133232213233332   >>