C11111211113313112113313331333133313331333132322121111121111331333132321123221   >>    C1111121111331311211331333133313331333133313232212111112111133133313232112322   <<    C11111211113313112113313331333133313331333132322121111121111331333132321123223   >>      C11111211113313112113313331333133313331333132322121111121111331333132321123222   >>