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Hi to everyone!

I’m new to SPM, so I’m trying to understand how things work, don’t be too cruel with me :P
I’m trying to do a block design fMRI experiment (13s stimulation-13no) during which a volunteer watch a video. 
In the video, we have three parts: in the first one, we show people that run, in the second part, people that walk and in the third part, people that jump.
So I’ve tried to analyze using 3 conditions and setting the contrast as:
1 0 0 run
0 1 0 walk
0 0 1 jump
because I want to see the (we suppose) different areas activated by the different type of movement and then:
1 -1 -1 run more than walk and jump
-1 1 -1 walk more than run and jump
-1 -1 1 jump more than run and walk
Could this be correct?
In the first-level analysis I chose 3 conditions so that this is the design:

What am I doing wrong?
Thanks in advance for your kind answer