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dt 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
dt1 1 2
dt2 1 2 3 4 5
dt3
dt4
dtap
dth 1 2 3 4 5 6 7
dtnl
dtotal
dtp 1 2 3 4 5 6 7 8 9
dtransmission

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