That means that every letter with a line of symmetry like M wouldn't work: A, T, U, V, W, and Y. But you can use the letters B, C, D, E, H, I, K, O, and X. It doesn't sound like a name but it could be Obeidh, Ikechi, Hideki, Dockie, Bohdie, Bodhie, Bobbie (unless you can't use the same letter twice), Debbie ("), Becki, Bodhe, Chiko, Cobie, Dixie ("), Echoe ("), Eddie ("), Kobe, Khoi, Echo, Bobo, Hido, Hebe, Kebe, Cobi, Debb, Kiki, Beck, Ike, Koe, Ed,
after the nazis invaded his home, him and his family weren’t going to go anywhere until his father returned home. after six months they had learned that he had been released but only on the condition that he would leave the country within the next 14 days, so after that they left.
"Like sparks from a blacksmith's window" refers to the sparks that happen when a blacksmith is working. The meaning depends on the context. The context should usually be something like anger, exploding anger, or it could be excitement...