C11111333133313232233133313331333133313232233312111133132231113121   >>    C1111133313331323223313331333133313331323223331211113313223111312   <<    C11111333133313232233133313331333133313232233312111133132231113123   >>      C11111333133313232233133313331333133313232233312111133132231113122   >>