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Level 2

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10 words 0 ignored

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Ignore words

Check the boxes below to ignore/unignore words, then click save at the bottom. Ignored words will never appear in any learning session.

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Ignore?
C2H4
etheen
C3H6
propeen
C4H8
buteen
C5H10
penteen
C6H12
hexeen
C7H14
hepteen
C8H16
octeen
C9H18
noneen
C10H20
deceen
C6H6
benzeen