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Now to adapt this into a @CheckItProblems exercise... sagecell.sagemath.org/?z=eJxlj0EKgzAQRfeB3GHATdIm1FjpzpOUCqmGGohaNJR4-06jVmlXmf_n5c9MAqa2HnxjRkNJa-tqQFkAk2eRcUoG-2j86uXighYlCTijXwa06zv8ddejrbAfylxmh1BmkMBgXGs7jFFCKi6i1gFYKtJFfbqxSUkYK-0MJnynXdObXJbBkpLpn1AboZDwg-5Gp72pkZIzf4ibsVCwcJpncP5DbiJiu6GcH_f5T9d7ttEi4AGFzFIsdCjwnVZjmg3-Bj5YbUc=&lang=sage&interacts=eJyLjgUAARUAuQ== t.co/P3ShTWvECP