imagine sheeps jumping over a fence.

then imagine a second sheep jumping over a fence

then imagine a third sheep jumping over a fence

then imagine a fourth sheep jumping over a fence

then imagine a fifth sheep jumping over a fence

then imagine a sixth sheep jumping over a fence

then imagine a seventh sheep jumping over a fence

then imagine a eight sheep jumping over a fence

then imagine a ninth sheep jumping over a fence

then imagine a tenth sheep jumping over a fence

then imagine a eleventh sheep jumping over a fence

then imagine a twelvth sheep jumping over a fence

then imagine a thirteenth sheep jumping over a fence

then imagine a fourtheent sheep jumping over a fence

then imagine a fifteenth sheep jumping over a fence

then imagine a seventeenth sheep jumping over a fence

then imagine a eighteenth sheep jumping over a fence

then imagine a ninteenth sheep jumping over a fence



then imagine the twentieth sheep that just jump but cant get over the fence, so he knocks his head by the fence and dies