a. Not regular . ¥]§tµL´`Àô¤p¼Æ
b. (a|b)(0|1|a|b)
c. Not regular. (you can get the proof from TA)
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a .Drawing3.jpg
b. Drawing4.jpg
a. ²²¤¬°: Drawing5.jpg
b. ²²¤¬°: Drawing6.jpg
a. Drawing7.jpg
b. Drawing8.jpg