Nonokari

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=""3*1*="3*1*"*2 *="*2 *"=""=""=""=""
2* 1="2* 1"
7="7"
3 *1="3 *1"
1* 1="1* 1"
2 2 1="2 2 1"
* 1 1="* 1 1"
* 1 *="* 1 *"