Form the negative adjectives using the following prefixes:
-un –ir –il –im –in –dis.

lawful ___ essential ___ formal ___
moral ___ important ___ honest ___
legal ___ acceptable ___ fair ___
rational ___ loyal ___ just ___
necessary ___ natural ___ reliable ___
ethical ___ logical ___ possible ___
responsible ___ safe ___ perfect ___

lawful unlawful___ essential unessential___ formal __informal_

moral _immoral__ important _unimportant__ honest __dishonest_

legal _illegal__ acceptable _unacceptable__ fair unfair___

rational _irrational__ loyal disloyal___ just _unjust__

necessary _unnessary__ natural _unnatural__ reliable _unreliable__

ethical _unethical__ logical _illogical__ possible _impossible__

responsible _irresponsible__ safe _unsafe__ perfect _imperfect__