Present participle; Past participle - stratifying - stratified Present - stratify - stratify - stratifies - stratify - stratify - stratify Past - stratified - stratified - stratified - stratified - stratified - stratified Future - will stratify - will stratify - will stratify - will stratify - will stratify - will stratify Present conditional - would stratify - would stratify - would stratify - would stratify - would stratify - would stratify Present Perfect - have stratified - have stratified - has stratified - have stratified - have stratified - have stratified Past Perfect - had stratified - had stratified - had stratified - had stratified - had stratified - had stratified Future Perfect - will have stratified - will have stratified - will have stratified - will have stratified - will have stratified - will have stratified Past conditional - would have stratified - would have stratified - would have stratified - would have stratified - would have stratified - would have stratified Imperative - - - stratify - - - - - - - -