最难的英文绕口令？

吉尼斯纪录：最难的英文绕口令：

The sixth sick Sheik's sixth sheep is sick.

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以下也是英美本土人都认为很难的绕口令：

A proper copper coffee pot.

Around the rugged rocks the ragged rascals ran.

Long legged ladies last longer.

Mixed biscuits, mixed biscuits.

A box of biscuits, a box of mixed biscuits and a biscuit mixer!
Peter Piper picked a peck of pickled pepper.

Did Peter Piper pick a peck of pickled pepper?
If Peter Piper picked a peck of pickled pepper,
Where's the peck of pickled pepper Peter Piper picked?

Pink lorry, yellow lorry.

Red leather, yellow leather, red leather, yellow leather.

She sells sea-shells on the sea-shore.

Swan swam over the pond,
Swim swan swim!
Swan swam back again -
Well swum swan!

Three grey geese in green fiel