Здравей, ето ти няколко варианта :

http://www.teenproblem.net/school/s/1203.html
http://www.teenproblem.net/school/s/1100.html
http://www.teenproblem.net/school/s/973.html
! http://www.teenproblem.net/school/s/589.html
! http://www.teenproblem.net/school/s/566.html


Успех!