Present participle; Past participle - pebbling - pebbled Present - pebble - pebble - pebbles - pebble - pebble - pebble Past - pebbled - pebbled - pebbled - pebbled - pebbled - pebbled Future - will pebble - will pebble - will pebble - will pebble - will pebble - will pebble Present conditional - would pebble - would pebble - would pebble - would pebble - would pebble - would pebble Present Perfect - have pebbled - have pebbled - has pebbled - have pebbled - have pebbled - have pebbled Past Perfect - had pebbled - had pebbled - had pebbled - had pebbled - had pebbled - had pebbled Future Perfect - will have pebbled - will have pebbled - will have pebbled - will have pebbled - will have pebbled - will have pebbled Past conditional - would have pebbled - would have pebbled - would have pebbled - would have pebbled - would have pebbled - would have pebbled Imperative - - - pebble - - - - - - - -