Answer:
1:Ctrl+C.cut: Ctrl+x. paste : Ctrl+v
2: Ctrl+S
3: Ctrl+O
4:Ctrl+W
5:shift+ctrl+left
shift+Ctrl+right
shift+ctrl+down
shift+ctrl+up
6: Ctrl +U
7: Ctrl+B
8:Ctrl+i
9:Ctrl+R
10:Ctrl+E
11:Ctrl+R
12:Ctrl +J
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