back up
verb
Infinitive
back up
Present tense 3rd person singular
backs up
Preterite
backed up
Present participle
backing up
Past participle
backed up
verb
back up
backs up
backed up
backing up
backed up
verb
verb
verb
verb
verb
verb
verb
verb vt vi
verb
verb
verb
verb
verb
verb
verb vi
verb
verb
verb
verb
verb