Choose match(es) for each given basic/extended regular expression (maybe multiple correct matches) and describe the pattern of matched string for 3), 4), 5), 6), 11).

5) [a-z] (\+[a-z])+

(a) a+b+c (b) +b (c) x (d) x+1 (e) x+a

6) a.[bc]+

(a)azbc (b)az (c)azbcbc (d)acc (e)acz

7) a.[0-9]

(a)azz (b)a0z (c)a01 (d)a0a (e)aza

8) [a-z]+[\.\?!]

(a)good! (b)Book. (c)hard? (d)cool?hot (e)nothing

9) [a-z]+[\.\?!]\s*[A-Z] (hint: \s matches any whitespace characters)

(a)Grade. A (b) book. Z (c) E. G (d) Level. a (e)index?a

10) (very )+(cool )?(good|bad) weather

(a)good weather (b) very good weather (c) cool weather

(d) very cool bad weather (e)cool good weather

11) -?[0-9]+ (a)3312 (b) -2231 (c) +32 (d) 0.5 (e)2/3

12) -?[0-9]*\.?[0-9]* (a)3312 (b) -2231 (c) +32 (d) 0.5 (e)2/3