d8 to d8: need 2 d8s
d7 to d7: need 2 d7s
d8 to d7 
d7 to d8
d8 to C: need full duplex
d7 to C: need full duplex
C to d7: need c pay form
C to d8: need c pay form
d8 from d8: need 2 d8s
d7 from d7: need 2 d7s
d8 from d7: need d8 claim form
d7 from d8: need d7 claim form
d8 from C: need d8 claim form
d7 from C: eed d7 claim form
C from d7
C from d8

