C11111211113313112113313331333133313233313113121111331322331323132321111   >>    C1111121111331311211331333133313331323331311312111133132233132313232111   <<    C11111211113313112113313331333133313233313113121111331322331323132321113   >>      C11111211113313112113313331333133313233313113121111331322331323132321112   >>