Learn more vocabularies from one word by reversing it

what i want to say it is like a game or croos word puzzle solving but you can creat new vocabularies from one word just revers it from end to beginning then you will get new word it is easy just littel concentration and you will find it we have to vary in learning ways to avoid boring and use creativity and our ideas inspiration i will give the first word and then you can give your owen and your sharing is creating new cycle in the orbit the first word
throw—-worth this is it go

loop-pool

gas-sag

drib- bird

sub-bus

god-dog

pan-nap(nap 2 have short sleep)