C3132121111331312113313331333133313331333132313331333133313231333133112212321   >>    C313212111133131211331333133313331333133313231333133313331323133313311221232   <<    C3132121111331312113313331333133313331333132313331333133313231333133112212323   >>      C3132121111331312113313331333133313331333132313331333133313231333133112212322   >>