C11112331312111112111133133313331333133313112113313331333133313331323221321211   >>    C1111233131211111211113313331333133313331311211331333133313331333132322132121   <<    C11112331312111112111133133313331333133313112113313331333133313331323221321213   >>      C11112331312111112111133133313331333133313112113313331333133313331323221321212   >>