set 1
leaf
– leaves
half
- halves
sniff
– sniffs
puff
– puffs
knife
– knives
safe - savesset 2
leaf
– leaves
half
- halves
wolf
– wolves
shelf
- shelves
sniff
– sniffs
puff
– puffs
knife
– knives
safe
– saves
life
– lives
belief
– beliefs
I believe (verb)