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quadrupling

/k w ä ˈd r o͞o p ə l ĭ ng, k w ä ˈd r o͞o p l ĭ ng/

quäd-rū-pling, quäd-rū-plĭng

Rule 1

Q always needs a U; therefore, U is not a vowel here.

Rule 2

A says /ä/ or /ŏ/ after W or QU.

Rule 3

U says /o͞o/ after R, L, or J (e.g. rude, flute, June).

Base Form

Past Tense

Past Participle

Present Participle

3rd Person Singular

Plural

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