Basis for AMT gain/loss on a business car traded-in for personal car.

[cls2812]

I purchased a used vehicle in 07/2020 for 26,000 and it was used for business purposes about 60% of the time. I used the expenses method instead of basic mileage method. In 10/2023, I traded-in for a personal car that I am leasing, and using about 40% of the time for business purposes. 

I am quite confused as to how much depreciation I have claimed in the last 2 years. 

2020 Tax return:(62%)
26e : 4,884
26 f: 5.00
26 g: 200 DB-HY
26 h: 0
26 i: 11,189

2021 (used 55.70% for business)
26 e: 3,293
f: 5.00
g, idem
h: 1,054
i: blank

2022: (55%)
e: 14,300
f: 5.0
g: idem
h: 2746
i: blank

What to I enter under for Basis of gain/loss of vehicle, and then Basis of AMT gain/loss of vehicle?