C312312111133131121333133313113313331333133313331323132323233231   >>    C31231211113313112133313331311331333133313331333132313232323323   <<    C312312111133131121333133313113313331333133313331323132323233233   >>      C312312111133131121333133313113313331333133313331323132323233232   >>