I would like 5 examples of English words which cannot be formed from
the normal tiles for the game of Scrabble. (English version of course
and please account for the two blank tiles)

 Cheers

  Mongolia

Dear mongolia,

Here are 5 examples, as you requested, each with proof of existence
through dictionary entries:

RAZZMATAZZ - there are only one Z and two blanks in the game, not
enough for all four Zs in this word.
http://www.bartleby.com/61/35/R0063500.html

PIZZAZZ - see above.
http://www.bartleby.com/61/8/P0340800.html

KNICKKNACK - four Ks in the word, but only one K and two blanks in the game.
http://www.bartleby.com/61/92/K0089200.html

SENSELESSNESSES - far too many Ss for the four contained in the
tileset and the two blanks.
http://www.bartleby.com/62/35/S1353500.html

STRESSLESSNESS - see above.
http://www.m-w.com/cgi-bin/dictionary?va=stresslessness


Hope this answers your question!
Regards,
Scriptor

Brilliant!

Mongolia