Roger showed his drawings to his father, who immediately produced several variants, including the impossible flight of stairs.

The Economist sometimes produces variants on the theme.

Mooney is still producing variants of the M20 today.

The plant will be at BMW's complex that already produces variants of the 1 Series model.

Over the next five years each of the three manufacturers produced faster and faster variants.

It is also an effective way for toy manufacturers to produce exclusive figures, chase figures or other variants.

The latter verse may be a mondegreen, and later musicians produced further variants.

In 1881 he was hired again and produced several variants based on the original plans.

The company was later to produce its own licensed clones and variants of the ZX81.

Reaction to this work has been both vigorous and mixed, with other writers producing further speculative schemes or variants.