C11111333133313232233133313331333133313231312111113331312233111   >>    C1111133313331323223313331333133313331323131211111333131223311   <<    C11111333133313232233133313331333133313231312111113331312233113   >>      C11111333133313232233133313331333133313231312111113331312233112   >>