269期，正码02,16,10,21,42K.02 21 √
270期，正码26,08,36,10,02K.10 √
271期，正码20,37,45,13,27K.27 √
272期，正码49,39,47,04,31K.04 √
273期，正码14,07,42,35,38K.x
274期，正码22,21,14,20,44K.20 22 44 √
275期，正码01,26,32,40,10K.x
276期，正码13,42,31,01,41K.13 √
277期，正码22,48,09,08,05K.48 √
278期，正码15,31,06,26,34K.34 √
□□□□□□＜10-8＞□□□□□□
279期，正码46,49,26,30,37K.37 26 30 √
280期，正码38,18,43,45,04K.x
281期，正码41,24,12,04,20K.????√
