I figured this out by ear. So I'm not quite sure if it's right, but it definitely 
sounds right to me :]

Gm (355333@1)                         Gm (355333@1)  GmGood (355333@1)bye to you my trusted friend, we`ve known each other since we were
D (xx0232@1)       C7 (x32310@1)name="chord_x32310@1">C7                             Gmnine (355333@1)or ten; together we climbed hills and trees,
Gm (355333@1)                D (xx0232@1)              C7 (x32310@1)                  Gm (355333@1) 
learned of love A B C; skinned our harts and skinned our knees.
Gm (355333@1)                                 Gm (355333@1)                   D (xx0232@1)            C7 (x32310@1)               
Good bye my friend it`s hard to die, when all the birds are singing in the sky
C7 (x32310@1)                           Gmnow (355333@1)that the spring is in the air
Gm (355333@1)                       D (xx0232@1)          C7 (x32310@1)             Gmpretty (355333@1)girls are ev'`ry where, think of me and I`ll be there

Gm (355333@1)                             D (xx0232@1)           C7We (x32310@1)had joy, we had fun, we had seasons in the sun,
C7 (x32310@1)                  D (xx0232@1)               C7 (x32310@1)              Gm (355333@1)
but the hills thet we climbed were just seasons out of time.