C11111211113313112113313331333133313331333132322121111121111122121   >>    C1111121111331311211331333133313331333133313232212111112111112212   <<    C11111211113313112113313331333133313331333132322121111121111122123   >>      C11111211113313112113313331333133313331333132322121111121111122122   >>