1、fabl,fabul=speak,
2、fabric=make，
3、fac,fic=face,
4、fac,fact,fect,fic,fig=make,do,
5、fader=league，
6、fall,fail,fault=err,deceive,
7、fend，fens=strke，
8、fer=bring,carry,
9、ferv=boil,
10、fess=speak，