Answer:
YES finally I see a clarinet player on here lol. (sorry I got a little excited)
The theme is: C C G G A A G F F E E D D C (and all the G's are open and they are all regular notes meaning no lower register keys)
Variation 1: C CC G GG A A.F G F FF E E.E D D.B C
Variation 2: CDEFG GG AG F G FEDF E EE DCBD C
Explanation: If you have questions about the fingerings I'll be glad to help with that too. I've been playing clarinet for 4 years and I love it. I hope you have fun with it! Thanks for the points ^-^.