801,810,811,812,813,814,821,831
124,164,411,412,413,414,416,418,421,431,451,461,471,481
803,823,830,832
403,423,430,432
250,251,252,253,254,256
214,234,274,472
701,721
703,723
270,271,272,273,702,720,722
123,213,231
INVERTED NUMBERS
108,128,180,181,182,183,184,850
450,451,452
106,126,160,161,162,163,166
218,238,281,283
216,236,261,263
470,704,724
760
123,213,223,231,232,233
THESE ARE PRACTICE! PRACTICE MAKES PERFECT!