3 ms·

Jan -> January, Feb -> February; Mar -> ... Frequently used parts of language are often irregular. Fortunately, I don't think plaintext you'd use sed against is

Jan -> January, Feb -> February; Mar -> ... Frequently used parts of language are often irregular. Fortunately, I don't think plaintext you'd use sed against is as irregular.

O_H_E 8y ago
Well, I understand this comment, but your original is still unclear to me. You might want to clarify it for others.