Regexes to find some patterns

Password evaluation

#Find some variations of months and seasons

grep -Ei 'j[a,A,@]nu[a,A,@]ry|f[e,E,3]bru[a,A,@]ry|m[a,A,@]rch|[a,A,@]pri[l,L,1]|m[a,A,@]y|jun[e,E,3]|ju[l,L,1]y|[a,A,@]ugu[s,S,$]t|[s,S,$][e,E,3]pt[e,E,3]mb[e,E,3]r|[o,O,0]ct[o,O,0]b[e,E,3]r|n[o,O,0]v[e,E,3]mb[e,E,3]r|d[e,E,3]c[e,E,3]mb[e,E,3]r|[s,S,$]umm[e,E,3]r|f[a,A,@][l,L,1][l,L,1]|w[i,I,1]nt[e,E,3]r|[s,S,$]pr[i,I,1]ng' 

#Find variations of the word "password"

grep -Ei p[a-z,A-Z,@][s,S,$][s,S,$]w[o,O,0]rd