Present participle; Past participle - concealing - concealed Present - conceal - conceal - conceals - conceal - conceal - conceal Past - concealed - concealed - concealed - concealed - concealed - concealed Future - will conceal - will conceal - will conceal - will conceal - will conceal - will conceal Present conditional - would conceal - would conceal - would conceal - would conceal - would conceal - would conceal Present Perfect - have concealed - have concealed - has concealed - have concealed - have concealed - have concealed Past Perfect - had concealed - had concealed - had concealed - had concealed - had concealed - had concealed Future Perfect - will have concealed - will have concealed - will have concealed - will have concealed - will have concealed - will have concealed Past conditional - would have concealed - would have concealed - would have concealed - would have concealed - would have concealed - would have concealed Imperative - - - conceal - - - - - - - -