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in the PONS Dictionary

de·duce [dɪˈdju:s, Am esp -du:s] VB trans

to deduce sth
to deduce that ...
to deduce whether ...

deduce [dɪˈdjuːs] VB

deduce

deduce

deduce
deduce
Present
Ideduce
youdeduce
he/she/itdeduces
wededuce
youdeduce
theydeduce
Past
Ideduced
youdeduced
he/she/itdeduced
wededuced
youdeduced
theydeduced
Present Perfect
Ihavededuced
youhavededuced
he/she/ithasdeduced
wehavededuced
youhavededuced
theyhavededuced
Past Perfect
Ihaddeduced
youhaddeduced
he/she/ithaddeduced
wehaddeduced
youhaddeduced
theyhaddeduced