C312312111111331312111133133313331333133322331333131323133313233313132211   >>    C31231211111133131211113313331333133313332233133313132313331323331313221   <<    C312312111111331312111133133313331333133322331333131323133313233313132213   >>      C312312111111331312111133133313331333133322331333131323133313233313132212   >>