Terry Jacks - Seasons In The Sun Chords & Tabs

I figured this out by ear. So I'm not quite sure if it's right, but it definitely 
sounds right to me :]  
[ Tab from: https://www.guitartabs.cc/tabs/t/terry_jacks/seasons_in_the_sun_crd_ver_5.html ]
Gm                           Gm    Gm
Good bye to you my trusted friend, we`ve known each other since we were
D         C7 C7                             Gm
nine or ten; together we climbed hills and trees,
Gm                  D                C7                    Gm   
learned of love A B C; skinned our harts and skinned our knees.
Gm                                   Gm                     D              C7                 
Good bye my friend it`s hard to die, when all the birds are singing in the sky
C7                             Gm
now that the spring is in the air
Gm                         D            C7               Gm
pretty girls are ev'`ry where, think of me and I`ll be there

Gm                               D             C7
We had joy, we had fun, we had seasons in the sun,
C7                    D                 C7                Gm  
but the hills thet we climbed were just seasons out of time.