Question: Write regular definitions for the following languages: 1-All strings of a's and b's that do not contain the substring abb. 2- All strings of a's

Write regular definitions for the following languages:

1-All strings of a's and b's that do not contain the substring abb.

2- All strings of a's and b's that do not contain the subsequence abb.

3-All strings of as and bs with and odd number of bs.

4-All strings of as and bs that contain at most two b's.

5- All strings of as and bs that contain just two or three b`s

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