string manipulation

[snb]

I'd prefer you to tell us what's the aim of all this.
I do not exclude the possibility there's a much simpler approach to it.



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https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=Ugw1-OyZiDDxCHM2Rmp4AaABAg.9hqzs_MlQu-9ht5xNvQueN
https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=Ugz0Uy2bCSCTb1W-0_14AaABAg
https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=Ugz0Uy2bCSCTb1W-0_14AaABAg.9htChVuaX9W9htG01cKBzX
https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=Ugw6UrV69zpeKvLOeOV4AaABAg. 9ht16tzryC49htJ6TpIOXR
https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=UgwMKwGZpDjv7vi7pCx4AaABAg
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https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=UgxVW-am20rQ5GFuJ9F4AaABAg
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https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=Ugz0Uy2bCSCTb1W-0_14AaABAg.9htChVuaX9W9i57J9GEOUB
https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=Ugz0Uy2bCSCTb1W-0_14AaABAg.9htChVuaX9W9i58MGeM8Lg
https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=Ugz0Uy2bCSCTb1W-0_14AaABAg.9htChVuaX9W9i59prk5atY
https://www.youtube.com/watch?v=LuAipOW8BNQ&lc=UgwaWs6XDXdQybNb8tZ4AaABAg. 9i5yTldIQBn9i7NB1gjyBk
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