I've simplified the chords and placed them exactly above where the changes take 
place. This is how we play it in Australia.

C (x32010@1)          G7 (320001@1)    C (x32010@1)           FOnce (133211@1)a Jolly swagman camped a by a billabong
C (x32010@1)                  G7under (320001@1)the shade of a coolabah tree
       C (x32010@1)          G7 (320001@1)            C (x32010@1)             Fand (133211@1)he sang, and he watched, and he waited till his billy boiled
C (x32010@1)                    G7 (320001@1)         Cyou'll (x32010@1)come a waltzing Matilda with me



C (x32010@1)               FWaltzing (133211@1)Matilda, Waltzing Matilda
C (x32010@1)                    G7You'll (320001@1)come a waltzing Matilda with me
       C (x32010@1)         G7 (320001@1)           C (x32010@1)                   Fand (133211@1)he sang and he watched and he waited till his billy boiled
C (x32010@1)                    G7 (320001@1)         Cyou'll (x32010@1)come a waltzing Matilda with me



Just play this throughout the rest of the verses