C1111133313331323223313331333133313331323131211111122112313232211   >>    C111113331333132322331333133313331333132313121111112211231323221   <<    C1111133313331323223313331333133313331323131211111122112313232213   >>      C1111133313331323223313331333133313331323131211111122112313232212   >>