（gengo言語） 言葉使い（ことば遣い）表記、誤用、誤記、文法間違い…について語ろう (Language) #66

http://linguistics.stackexchange.com/questions/2319/what-is-the-maximum-number-of-forms-a-modern-japanese-verb-can-take

(1)　Vstem-causitive-passive-aspect-desiderative-NEG-tense

All the possibilities are not, of course, exploited in each expression, but the following illustrates some of the lengthy but commonly observed forms:

•行かせられない　'go'-CAUS-POTEN-NEG-PRES
•行かせられたくない　'go'-CAUS-PASS-DESI-NEG-PRES
•歩かせ続けたい　'walk'-CAUS-CONT-DESI-PRES