Write a regular expression pattern that matches the same strings described in part 1a. But in addition for this pattern, ensure capture group 1 (also named step) is the S or None; group 2 (also named great) is some number of Gs or None; group 3 (also named grand) is the g or None; group 4 (also named basic) is the m, f, d, or s. For example, if we execute m = re.match(the-pattern, 'GGgf) then m.groups() returns (None, 'GG', 'g', 'f'); and m.groupdict() returns {'step': None, 'great': 'GG', 'grand': 'g', 'basic': 'f'}. There should be no other numbered capture groups. Hint (?:...) creates a parenthesized regular expression that is not numbered as a group. You can write one regular expression for both 1a and 1b, or you can write a simpler one for 1a (just use parentheses for grouping and ignore capture groups) and then update it for 1b by including only the necessary groups. Put your answer in repattern1b.txt