C312312111111331312111133133313331331121111331333131113331323223331221   >>    C31231211111133131211113313331333133112111133133313111333132322333122   <<    C312312111111331312111133133313331331121111331333131113331323223331223   >>      C312312111111331312111133133313331331121111331333131113331323223331222   >>