14.Nine nice night nurses nursing nicely

15 .A flea and a fly in a flue Said the fly "Oh what should we do" Said the flea" Let us fly Said the fly"Let us flee" So they flew through a flaw in the flue

16.If you tell Tom to tell a tongue-twister his tongue will be twisted as tongue-twister twists tongues.

17.Mr. See owned a saw.And Mr. Soar owned a seesaw. Now See's saw sawed Soar's seesaw Before Soar saw See, Which made Soar sore.Had Soar seen See's saw Before See sawed Soar's seesaw, See's saw would not have sawed Soar's seesaw. So See's saw sawed Soar's seesaw.But it was sad to see Soar so sore Just because See's saw sawed Soar's seesaw .....