defer, infer, prefer, refer, transfer, occur (occurrence), abhor (abhorrence), omit, remit, permit, commit, beset, impel, compel, repel, excel (excellence), mob, sob, rub, skid.

If these words are not accented on the last syllable, the consonant is not doubled; as,

benefit, benefited, benefiting, beneficial.

Similar are:

differ, summon, model.

200. Words ending in silent e drop the e before a suffix beginning with a vowel; as,

arrive, arriving, arrived, arrival.
precede, preceded, preceding, precedence.
receive, received, receiving.

Similar are:

move, write, blame, tame, come, receive, believe, relieve, grieve, deceive, conceive, perceive, seize, precede, concede, supersede, recede, argue, rue, construe, woe, pursue.

201. Words ending in -ge, -ce, or -se, retain the e before endings: as,