Is the "PROB" in a TAF only applying to the next group or all following ones? Let's assume I have a TAF that reads:

[...]
PROB40
TEMPO 0815/0822 5000 -SHSN BKN008 OVC015
TEMPO 0822/0909 1000 SN VV003
BECMG 0902/0904 16012KT


Which of the TEMPO / BECMG groups have a probability of 40%? All three because everything that follows PROB40 has a probability of 40%? Just the first TEMPO because PROB40 only means the one following line in the TAF? Or both TEMPO ones, and BECMG is again certain and not just 40% probable?
PROB40 is targeted only on the immediate TEMPO group. If there are several PROB/TEMPOs both keywords must be repeated every time. Also, PROB is never associated with BECMG or FM groups, which indicate permanent change.