C312312111111331312111133133313331333133322331333133313311223312331   >>    C31231211111133131211113313331333133313332233133313331331122331233   <<    C312312111111331312111133133313331333133322331333133313311223312333   >>      C312312111111331312111133133313331333133322331333133313311223312332   >>