NEED HELP IN c, d and e

Write regular expressions for these languages: a) Any string over the alphabet {0,1} that contains the pattern 0110 OR the pattern 1001. b) Any string over the alphabet {0,1} that contains the pattern 0110 AND the pattern 1001. c) Any string over the alphabet {x,y,z} that contains an even number of y's. d) Any string over the alphabet {t,u,v} that has at least 4 characters, and the third character is not a u. e) Any string over the alphabet {a,b,c} that begins with bc and ends with ca