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1-1-1 Doubling Rule

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  • mix + ing
    mixing
  • clap + ing
    clapping
  • punish + ment
    punishment
  • pack + ing
    packing
  • spell + ing
    spelling
  • sing + er
    singer
  • block + ing
    blocking
  • lock + er
    locker
  • cup + ful
    cupful
  • big + est
    biggest
  • kind + ness
    kindness
  • shift + ing
    shifting
  • stun + ing
    stunning
  • fat + est
    fattest
  • tap + ed
    tapped
  • spit + ing
    spitting
  • wag + ed
    wagged
  • plug + ed
    plugged
  • hug + ed
    hugged
  • swim + er
    swimmer
  • help + ful
    helpful
  • cut + s
    cuts
  • child + ish
    childish
  • drop + ing
    dropping
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