สามตัวตรงคงที่ = หาค่าx
...
00x-0x0-19x-1x9-91x-9x1-28x-2x8-82x-8x2-37x-3x7-73x-7x3-55x-5x5-46x-4x6-64x-6x4
01x-0x1-10x-1x0-29x-2x9-92x-9x2-38x-3x8-83x-8x3-47x-4x7-74x-7x4-56x-5x6-65x-6x5
04x-0x4-40x-4x0-13x-1x3-31x-3x1-22x-2x2-59x-5x9-95x-9x5-68x-6x8-86x-8x6-77x-7x7
07x-0x7-70x-7x0-16x-1x6-61x-6x1-25x-2x5-52x-5x2-34x-3x4-43x-4x3-89x-8x9-98x-9x8
09x-0x9-90x-9x0-18x-1x8-81x-8x1-27x-2x7-72x-7x2-36x-3x6-63x-6x3-45x-4x5-54x-5x4
...
ปี2562
079 = 07x
134 = 13x
824 = 82x
650 = 65x
628 = 6x8
767 = 7x7
331 = 3x1
324 = 3x4
526 = 5x6
461 = 46x
055 = ผิด(มาโต๊ด 55x)
647 = 64x
765 = ผิด(มาโต๊ด 56x)
006 = 00x
476 = 4x6
787 = 7x7
388 = 3x8
197 = 19x
564 = 56x
375 = 37x
223 = 22x
522 = 52x
924 = 92x
541 = 54x
................
ปี2563
774 = 7x4
227 = 22x
403 = 40x
938 = 9x8
446 = 4x6
......................................................................................
้H = 0 = 00x-0x0-01x-0x1-04x-0x4-07x-0x7-09x-0x9
H = 1 = 19x-1x9-10x-1x0-13x-1x3-16x-1x6-18x-1x8
H = 2 = 28x-2x8-29x-2x9-22x-2x2-25x-2x5-27x-2x7
H = 3 = 37x-3x7-38x-3x8-31x-3x1-34x-3x4-36x-3x6
H = 4 = 46x-4x6-47x-4x7-40x-4x0-43x-4x3-45x-4x5
H = 5 = 55x-5x5-56x-5x6-59x-5x9-52x-5x2-54x-5x4
H = 6 = 64x-6x4-65x-6x5-68x-6x8-61x-6x1-81x-8x1
H = 7 = 73x-7x3-74x-7x4-77x-7x7-70x-7x0-72x-7x2
H = 8 = 82x-8x2-83x-8x3-86x-8x6-89x-8x9-81x-8x1
H = 9 = 91x-9x1-92x-9x2-95x-9x5-98x-9x8-90x-9x0
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ปี62-ล่าสุด ผิด 2 งวดคือ 055,765