two pigs are before one pig.two pigs areafter one pig.one pi

two pigs are before one pig.two pigs areafter one pig.one pi Two pigs are before on pig.Two pigs are after one pig.One pi drive one's pigs to one two one two 1.Pigs might fly.2.When pigs fly.3.Drive one's pigs to marke One is but two are. 英语儿歌（one two three we are happy One two one two three.) two tigers walk before one tiger.two tigers walk One plus one equals two. one and one is two one and one equals two Two heads are better than one.