C111123313331323113313331333133313331323133113313331333131333131212211111   >>    C11112331333132311331333133313331333132313311331333133313133313121221111   <<    C111123313331323113313331333133313331323133113313331333131333131212211113   >>      C111123313331323113313331333133313331323133113313331333131333131212211112   >>