{
  "good": [
    14512,
    14513,
    14514,
    14515,
    14516,
    14517,
    14518,
    14519,
    14520,
    14521,
    14522,
    14523,
    14524,
    14525,
    14526,
    14527,
    14528,
    14529,
    14530,
    14531,
    14532,
    14533,
    14534,
    14535,
    14536,
    14537,
    14538,
    14539,
    14540,
    14541,
    14542,
    14543,
    14544,
    14545,
    14546,
    14547,
    14548,
    14549,
    14550,
    14551,
    14552,
    14554,
    14555,
    14556,
    14557,
    14558,
    14559,
    14560,
    14561,
    14562,
    14563,
    14564,
    14565,
    14566,
    14567,
    14568,
    14569,
    14570,
    14571,
    14572,
    14573,
    14574,
    14575,
    14576,
    14577,
    14578,
    14579,
    14580,
    14581,
    14582,
    14583,
    14584,
    14585,
    14586,
    14587,
    14588,
    14589,
    14590,
    14591,
    14592,
    14593,
    14594,
    14595,
    14596,
    14597,
    14598,
    14599,
    14600,
    14601,
    14602,
    14603,
    14604,
    14605,
    14606,
    14607,
    14608,
    14609,
    14610,
    14611,
    14612,
    14613,
    14614,
    14615,
    14616,
    14617,
    14618,
    14619,
    14620,
    14621,
    14622,
    14623,
    14624,
    14625,
    14626,
    14627,
    14628,
    14629,
    14630,
    14631,
    14632,
    14633,
    14634,
    14635,
    14636,
    14637,
    14638,
    14639,
    14640,
    14641,
    14642,
    14643,
    14644,
    14645,
    14646,
    14647,
    14648,
    14649,
    14650,
    14651,
    14652,
    14653,
    14654,
    14655,
    14656,
    14657,
    14658,
    14659,
    14660,
    14661,
    14662,
    14663,
    14664,
    14665,
    14666,
    14667,
    14668,
    14669,
    14670,
    14671,
    14672,
    14673,
    14674,
    14675,
    14676,
    14677,
    14678,
    14679,
    14680,
    14681,
    14682,
    14683,
    14684,
    14685,
    14686,
    14687,
    14688,
    14689,
    14690,
    14691,
    14692,
    14693,
    14694,
    14695,
    14696,
    14697,
    14698,
    14699,
    14700,
    14701,
    14702,
    14703,
    14704,
    14705,
    14706,
    14707,
    14708,
    14709,
    14710,
    14711,
    14712
  ],
  "needs_revision": {
    "14553": "vague placeholder solution: instructs student to work out lengths rather than showing computation steps; perimeter stated as 52 cm but derivation not shown"
  }
}