Word tasker with one letter changed

Letter on position 1 (t) changed: 1 word

masker

Letter on position 2 (a) changed: 1 word

tusker

Letter on position 3 (s) changed: 3 words

Letter on position 4 (k) changed: 1 word

taster

Letter on position 6 (r) changed: 1 word

tasked