C312312111111331312111133133313331333133322331323133313133313133313232331321   >>    C31231211111133131211113313331333133313332233132313331313331313331323233132   <<    C312312111111331312111133133313331333133322331323133313133313133313232331323   >>      C312312111111331312111133133313331333133322331323133313133313133313232331322   >>