C11111333133313232233133313331333133313231312111133132212133313113322121   >>    C1111133313331323223313331333133313331323131211113313221213331311332212   <<    C11111333133313232233133313331333133313231312111133132212133313113322123   >>      C11111333133313232233133313331333133313231312111133132212133313113322122   >>