re1 = '(\\d{1,3}[a-zA-Z]?/\\d{1,3}[a-zA-Z]?)'
re2 = '(\\babc\\b)'
re.findall(re1, text)
re.findall(re2, text)
re1_matches = re.findall(re1, text)
re2_matches = re.findall(re2, text)
rex_nomatch = re.findall('conglomeration_of_sandwiches', text)
Merge several regular expressions into one RE