The a and b lists include every 737, leased and owned plus every 777 on the property. Of the 763s, 25 of them don't show up on any of the three lists. There are 80 757s on the three lists, but that leaves 44 757s unaccounted for. One 762 lease ended in 2011 and two more end in 2012. The "maybe" list b includes 11 of the 15 762s, but that leaves one unaccounted for. I assume that all 15 762s are short-timers and will be retired quickly. The a and b lists contain 110 MD-80s with another 21 on the c list out of 224 MD-80s active as of 12/31/10, but I assume that some MD-80s were parked during 2011.
The three lists total 472 planes out of about 600, so there are about 128 not accounted for on these three lists.