Anicca: Impermanence
Everything assembled comes apart, and a tent is the honest house for a body: pegs in soft ground, canvas thinning, meant to come down. Paul stitched such shelters for a living, and out of every dwelling he could have named he picked the one a strong wind takes. Groaning starts right there, in a shelter never built to stand.
Dukkha: Suffering
Groaning is the sound a body makes under a weight it cannot set down. The ache runs under the good days as well as the bad, the way a bad tooth keeps aching while you eat. Saying so plainly, without dressing it up, is where the road out begins.
Bhāra: The burden
Craving is the hand that lifts the load, and the five heaps are what settles on the shoulder. Being burdened is that posture exactly: walking bent under a pack whose straps you tied yourself. Relief comes from untying the strap rather than growing a stronger back.
Anattā: Not-self
"We who are in this tent" puts a tenant behind the canvas, someone who could step out and stand in the open air. Search for that tenant and only the tent turns up: poles, canvas, breathing, wanting. The load is being carried, and no separate carrier is found holding it.
Bhavataṇhā: Craving to go on existing
Thirst for more being, with vibhavataṇhā, thirst for an end of being, as its twin. Unclothing is refused flatly here, and the request is for another garment pulled over this one: more covering, more continuing. Existence on any terms, so long as it goes on, is what keeps the whole round turning.
Amata: The deathless
Swallowed up by life turns the usual direction around, since here death is the thing consumed. The deathless opens in this life, in this body, the moment the thirst lets go, arriving as a burden set down rather than a garment handed out later. A lamp goes out when its oil is spent, and nothing is left to burn.