The four sentences (labelled $1, 2, 3$ and $4$) below, when properly sequenced, would yield a coherent paragraph. Decide on the proper sequencing of the order of the sentences and key in the sequence of the four numbers as your answer:
- If I wanted to sit indoors and read, or play Sonic the Hedgehog on a red-hot Sega Mega Drive, I would often be made to feel guilty about not going outside to "enjoy it while it lasts".
- My mum, quite reasonably, wanted me and my sister out of the house, in the sun.
- Tales of my mum's idyllic-sounding childhood in the Sussex countryside, where trees were climbed by $8$ am and streams navigated by lunchtime, were passed down to us like folklore.
- To an introverted kid, that felt like a threat - and the feeling has stayed with me.