C3132121111331312113313331333133313331333132313331333133112233221   >>    C313212111133131211331333133313331333133313231333133313311223322   <<    C3132121111331312113313331333133313331333132313331333133112233223   >>      C3132121111331312113313331333133313331333132313331333133112233222   >>