Where do the cortical spinal dorsal column lateral spinothalamic and spinocerebellar tracts cross

Where do the cortical spinal dorsal column lateral spinothalamic and spinocerebellar tracts cross? 

The descending cortical spinal tract decussates in the lower medulla, travels down the spinal cord, and innervates muscles contralateral to its motor strip of origin.

The dorsal column tracts enter the spinal cord and ascend ipsilateral to their entry point.

They then decussate in the lower medulla.

The lateral spinothalamic tract enters the spinal cord and immediately decussates one to two levels above their entry points and then ascends in the spinal cord contralateral to their points of entry.

The spinocerebellar tracts do not decussate.

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