A . T1:RA.,T2:RB.,T2:WB.,T1:WA.B . T1:RB.,T1:WB.,T2:RA.,T2:WA.C . T1:RA.,T2:RB.,.T1:WA.,T2:WB.D . T2:RA.,T1:RB.,.T1:WA.,T2:WB.
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