Present participle; Past participle - laboring - labored Present - labor - labor - labors - labor - labor - labor Past - labored - labored - labored - labored - labored - labored Future - will labor - will labor - will labor - will labor - will labor - will labor Present conditional - would labor - would labor - would labor - would labor - would labor - would labor Present Perfect - have labored - have labored - has labored - have labored - have labored - have labored Past Perfect - had labored - had labored - had labored - had labored - had labored - had labored Future Perfect - will have labored - will have labored - will have labored - will have labored - will have labored - will have labored Past conditional - would have labored - would have labored - would have labored - would have labored - would have labored - would have labored Imperative - - - labor - - - - - - - -