C11111333133313232233133313331333132313331323321313331323132213231121   >>    C1111133313331323223313331333133313231333132332131333132313221323112   <<    C11111333133313232233133313331333132313331323321313331323132213231123   >>      C11111333133313232233133313331333132313331323321313331323132213231122   >>