Present participle; Past participle - spanning - spanned Present - span - span - spans - span - span - span Past - spanned - spanned - spanned - spanned - spanned - spanned Future - will span - will span - will span - will span - will span - will span Present conditional - would span - would span - would span - would span - would span - would span Present Perfect - have spanned - have spanned - has spanned - have spanned - have spanned - have spanned Past Perfect - had spanned - had spanned - had spanned - had spanned - had spanned - had spanned Future Perfect - will have spanned - will have spanned - will have spanned - will have spanned - will have spanned - will have spanned Past conditional - would have spanned - would have spanned - would have spanned - would have spanned - would have spanned - would have spanned Imperative - - - span - - - - - - - -