C312312111111331312111133133313231333133313112331333133322331322231333132212131   >>    C31231211111133131211113313331323133313331311233133313332233132223133313221213   <<    C312312111111331312111133133313231333133313112331333133322331322231333132212133   >>      C312312111111331312111133133313231333133313112331333133322331322231333132212132   >>