SingularPlural
I will have walkedwe will have walked
you will have walkedyou will have walked
he/she/it will have walkedthey will have walked

SingularPlural
I will have sleptwe will have slept
you will have sleptyou will have slept
he/she/it will have sleptthey will have slept

SingularPlural
I will have beenwe will have been
you will have beenyou will have been
he/she/it will have beenthey will have been