A workout!

Split pair, sums that equal 4

1x3, 3x1

2x2

0x4,  4x0

• Results:  3 box combination groups  (3 straight combinations)

Tier 1
202 222 282

• Results:  7 box combination groups  (7 straight combinations)

Tier 1
212 232 242 252 262 272 292

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• Results:  5 box combination groups  (10 straight combinations)

Tier 3
391(391,391)

Tier 2
351(351) 311(311) 301(301)

Tier 1
341

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• Results:  5 box combination groups  (5 straight combinations)

Tier 1
321 331 361 371 381

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• Results:  6 box combination groups  (6 straight combinations)

Tier 1
193 113 143 133 173 153

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• Results:  4 box combination groups  (4 straight combinations)

Tier 1
103 123 163 183

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• Results:  3 box combination groups  (4 straight combinations)

Tier 2
400(400)

Tier 1
470 420

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• Results:  7 box combination groups  (7 straight combinations)

Tier 1
410 430 440 450 460 480 490

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• Results:  6 box combination groups  (10 straight combinations)

Tier 3
024(024,024)

Tier 2
074(074) 034(034)

Tier 1
044 084 014

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• Results:  4 box combination groups  (4 straight combinations)

Tier 1
004 054 064 094