C11111211113313112113313331333133313331333131211113313331311331322331312111   >>    C1111121111331311211331333133313331333133313121111331333131133132233131211   <<    C11111211113313112113313331333133313331333131211113313331311331322331312113   >>      C11111211113313112113313331333133313331333131211113313331311331322331312112   >>