Summer never lasts

I came up with a pleasant chord sequence on the guitar, (Just don't ask which chords cos I don't know thier names).

I started to sing, and so far I've got the first two verses

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Summers never last,
Autumn come so fast,
Winter's just around the bend.

I know spring will bring
Summer once again.
The cycle's bound to start anew.


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All I need is a chourus and some more verses.