12305 → 2307+21863 → 1860-3
21986 → 1998+121874 → 1864-10
31820 → 1831+111903 → 1893-10
41860 → 1873+131864 → 1851-13
52307 → 2309+21831 → 1829-2
61998 → 2011+131893 → 1886-7
72309 → 2312+32011 → 2004-7
81851 → 1864+131829 → 1820-9
91886 → 1894+81873 → 1860-13