If you are moving from a item of first block to the item of another block in a form then following trigger will be fired.

post-text
when-validate-item (fired only when the status of the textitem has been changed)
post-block
pre-block
when-new-block-instance
pre-text
when-new-item-instance

If you are moving from a item to another item  in same form then following trigger will be fired.

post-text
when-validate-item (fired only when the status of the textitem has been changed)
pre-text
when-new-item-instance