As Samma stated, the triads correspond very clearly to the four satipatthanas.
Going through the 16 steps is itself the perfect culmination of satipatthana, but it should be pointed out that other meditations, like four elements meditation, corpse meditation, metta meditation, etc. are also very helpful practices.
Gain and loss, status and disgrace,
censure and praise, pleasure and pain:
these conditions among human beings are inconstant,
impermanent, subject to change.
Knowing this, the wise person, mindful,
ponders these changing conditions.
Desirable things don’t charm the mind,
undesirable ones bring no resistance.
His welcoming and rebelling are scattered,
gone to their end,
do not exist.
- Lokavipatti Sutta