C11111333133313232233133313331333133313231312111133131123313332321333121   >>    C1111133313331323223313331333133313331323131211113313112331333232133312   <<    C11111333133313232233133313331333133313231312111133131123313332321333123   >>      C11111333133313232233133313331333133313231312111133131123313332321333122   >>