C3132121111331312113313331333131211113313221323133313232233313221   >>    C313212111133131211331333133313121111331322132313331323223331322   <<    C3132121111331312113313331333131211113313221323133313232233313223   >>      C3132121111331312113313331333131211113313221323133313232233313222   >>