C11111333133313232233133313331333132313331323321313331333313231121   >>    C1111133313331323223313331333133313231333132332131333133331323112   <<    C11111333133313232233133313331333132313331323321313331333313231123   >>      C11111333133313232233133313331333132313331323321313331333313231122   >>