Change one letter.

[Mottie]

Fill

night night xx

 

[Captain Nemesis]

Its not in the rules, but it kinda feels that there ought to be a rule against repetition, or you could just go on forever, circling round the same sequence of words ad infinitum?

Bags

Bags

Cats

Andy

Mate

Andy

Cats

Mate

Andy

 

[Captain Nemesis]

Anyway...

zill

 

[Scarlet Pimpernel]

cill

 

[HERTS P&D]

Mill

Andy

 

[Mottie]

Mall

 

[sxturbo]

Gall

 

[Mottie]

Gull

 

[Scarlet Pimpernel]

Aull

 

[Captain Nemesis]

Auld

 

[Scarlet Pimpernel]

Ould

 

[Captain Nemesis]

Guld

 

[Mottie]

Pull

 

[ellal]

Cull

 

[Captain Nemesis]

Guld

Pull

Dear God, Mottie - the rules are really very simple.

The rules!

Four letter words only. Change only one letter at a time and all letters must stay in the same order.