GROUND COVER PLANTS *HELP!!*

Hi im currently stuck on the following qestion on my RHS course in England.Can anyone please help?

List 5 hardy ground-cover plants, selected primarily for their foliage, suitable for a garden surrounding a small outdoor sculpture. The garden is set in grass, there is shelter from strong winds, and there is bright sunlight. The soil reaction is ph7, and there is good drainage. For each plant indicate

a)Generic name, specific epithet and cultivars
b)Requirement of space characteristics

 

Pulmonaria comes immediately to mind.

Snow in summer perhaps.

Beyond that I'd have to think.

 

Variegated aubretia, erica carnea, golden thyme could do it.

 

Thank you very much.Thats a great help

Tim