11. Double-letter contractions bb, cc, dd, ff, and gg and the Contraction ea

1. Are subject to the general rules for the use of contractions and to the rules for lower-sign contractions.
2. May be used only between letters and/or contractions within a word. May never begin or end a word.
   

   ru(bb)(ed)	g(gg)s	ea(ch)
   sni(ff)s	m(ea)n	ea(st)
   tea	cuff	add

   
   
3. May not overlap a major syllable division, but may overlap a minor syllable division if this does not obscure recognition of the word.
   

   dumbbell	a(ff)ect	wiseacre
   di(gg)(er)	readju(st)	oc(ea)n
   a(cc)ept	cr(ea)te	p(er)mea(ble)
   h(ea)dress	id(ea)s	a(gg)regate
   a(dd)ress	mileage	efface

   
   
4. May never be in contact with the apostrophe or the hyphen.
   

   diff'r(en)t	ebb-tide	a(dd)(ed).
   (sh)(er)iff's	cuff-l(in)k	add- (ed).
   s(ou)'ea(st)	cr(ea)te	sea-isl(and)
   e(gg)plant	egg- plant	sea- (sh)ore