Symbolize each of the following. Once you have finished with any answer and moved on, the program will check your work. As long as your answer is logically equivalent to a correct answer, your answer will be counted as correct too.

Hints:

• If the program seems to be taking some time to work, note the "status line" at the bottom left. It keeps you up to date.
• Also, and most importantly, if you just can't get an answer, you can get help. Enter "?" instead of a symbolization; the correct answer will pop up.
• Finally, you can enter text without the shift-key. The program will understand. Once you finish with an SL sentence, hit the TAB key, and your sentence will be converted to the appropriate character automatically.

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