C11112331312111112111133133313331333133313112113313331333133313331331123221221   >>    C1111233131211111211113313331333133313331311211331333133313331333133112322122   <<    C11112331312111112111133133313331333133313112113313331333133313331331123221223   >>      C11112331312111112111133133313331333133313112113313331333133313331331123221222   >>