Find the relationship

 One of these will play or mirror. Check your workout 

520, 429, 528, 438

One off 319 this week

 

319
1-OFF One Digit	419, 329, 310, 219, 309, 318,
1-OFF Two Digits	429, 320, 410, 409, 229, 328, 418, 210, 300, 209, 308, 218,
1-OFF Three Digits	420, 428, 220, 400, 408, 228, 200, 208,

Watch for mirror off 319 this week

 319  369 

314   319

814  819

864  869

One off 330

 

330
1-OFF One Digit	430, 340, 331, 230, 320, 339,
1-OFF Two Digits	440, 341, 431, 420, 240, 349, 439, 231, 321, 220, 329, 239,
1-OFF Three Digits	441, 449, 241, 421, 429, 249, 221, 229,