C312312111133131121333133313113313331333133313331323133313222211   >>    C31231211113313112133313331311331333133313331333132313331322221   <<    C312312111133131121333133313113313331333133313331323133313222213   >>      C312312111133131121333133313113313331333133313331323133313222212   >>