1) stop + ed a) stopped b) stoped 2) quit + ing a) quiting b) quitting 3) sink +ing a) sinkking b) sinking 4) spoke + en a) spoken b) spokeen 5) aim + ing a) aiming b) aimming 6) baby + es a) babyes b) babies 7) coop + ed a) cooped b) coopped 8) fast + est a) fastest b) fasttest 9) run + er a) runer b) runner 10) shop + ing a) shopping b) shoping 11) play + ful a) playful b) plaiful 12) steep + er a) steepper b) steeper 13) thin + est a) thinnest b) thinest 14) rely + able a) reliable b) relyable 15) kick + er a) kicker b) kickker 16) study + ing a) studiing b) studying 17) stay + ing a) staying b) stayying  18) mat + ed a) mated b) matted 19) red + er a) redder b) reder 20) show + ing a) showing b) showwing 21) seed + ed a) seeded b) seedded 22) blow + ing a) blowwing b) blowing 23) flat + est a) flatest  b) flattest  24) enjoy + ing a) enjoiing b) enjoying

Doubling Rule

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