think back
verb
Infinitive
think back
Present tense 3rd person singular
thinks back
Preterite
thought back
Present participle
thinking back
Past participle
thought back
verb
think back
thinks back
thought back
thinking back
thought back
verb
verb
verb vt vi
verb
verb
verb
verb
verb
verb
verb vi
verb
verb
verb
verb
verb
verb
verb
verb
verb
verb