Initial updraft---latent heat released by condensation will increase buoyancy of rising air column and create a 'burner chamber' 3.
(latent heat; released; by condensation) (Initial updraft; will increase; buoyancy of rising air column) (Initial updraft; create; a 'burner chamber' 3)
latent heat Initial updraft Initial updraft
released will increase create
by condensation
buoyancy of rising air column
a 'burner chamber' 3