有cc：
success sccessful access CCTV
有ll：
travelling roll ball call tall wall all
有ss：
success sccessful access jess less guess nevertheless
有ly：
friendly lily lovely deeply lonely lightly sadly happily
有ay：
lay way may cay cray gray play bay say pay
有ing：
sing ring swing king being ling ping ding ting wing
去e加ing：
love-loving hate-hating dance-dancing move-moving write-writing type-typing
choose-choosing leave-leaving raise-raising provide-providing
ride-riding smoke-smoking have-having make-making
drive-driving dive-diving use-using include-including give-giving require-requiring purchase-purchasing advise-advising
双写ing：
singing ringing swinging winging