Please help with these problems in Python.

2. Given a proposed word that someone wants to play, can you check that it is a valid word?

3. Given a set of tiles and a word, can you check if the word can be made from the tiles?

4. Even more useful: given a set of tiles, can you find all the words you can make with them? For example, if you have the tiles in the word retains, you could also rearrange them to spell anestri, nastier, ratines, retains, retinas, retsina, stainer, and stearin.

5. The New York Times Sunday Magazine publishes a related puzzle called the Spelling Bee each week. An example from the December 30, 2018 magazine is shown in Figure 1. Can you write a function to tell you all of the possible words for a given puzzle?

6. In Scrabble, a bingo is when you play all seven tiles in your rack, along with an eighth letter on the board, to form an eight letter word. What set(s) of eight letters forms the most possible bingos?