C111123313331323113313331333133313331323112133313331333131213312111   >>    C11112331333132311331333133313331333132311213331333133313121331211   <<    C111123313331323113313331333133313331323112133313331333131213312113   >>      C111123313331323113313331333133313331323112133313331333131213312112   >>