In the sutta the insight refrain is included after every new topic introduced in the sutta with only a small change to address the particular experience being explored. I posted this refrain it a few years ago. It will open in a new window: http://maryrees.blogspot.com/2009_03_01_archive.html
Our online groups are working now with the fourth foundation of mindfulness, I have posted the refrain again here with the simple change of focusing, not on the body, but on dhammas or dhammā (for a discussion on dhammā see another earlier post - again a new window).
In this way, in regard to dhammā s/he abides contemplating dhammā internally, or s/he abides contemplating dhammā externally, or s/he abides contemplating dhammā both internally and externally.
S/he abides contemplating the nature of arising of dhammā, or s/he abides contemplating the nature of passing away of dhammā, or s/he abides contemplating the nature of both arising and passing away of dhammā.
Mindfulness that 'there are dhammā' is established in her/him to the extent necessary for bare knowledge and continuous mindfulness.
And s/he abides independent, not clinging to anything in the world. "That is how in regard to the dhammā s/he abides contemplating the dhammā.
