C11111333133313232233133313331333133313331313331333133313331323132312211   >>    C1111133313331323223313331333133313331333131333133313331333132313231221   <<    C11111333133313232233133313331333133313331313331333133313331323132312213   >>      C11111333133313232233133313331333133313331313331333133313331323132312212   >>