一般規(guī)則是字母i在e前面，但在c之后除外：
    believe sieve
    但是：
    deceive receipt
    下面這些詞例外，都拼寫為ei：
    beige feint heir reign their
    counterfeit foreign inveigh rein veil
    deign forfeit inveigle seize vein
    eiderdown freight leisure skein weigh
    eight heifer neigh sleigh weight
    either height neighbour sleight weir
    feign heinous neither surfeit weird