Special assignment solution

HQ Router

Router>sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route
Gateway of last resort is not set
     192.168.9.0/24 is variably subnetted, 5 subnets, 2 masks
S       192.168.9.0/26 is directly connected, Serial0/0/1
S       192.168.9.64/26 is directly connected, Serial0/0/0
C       192.168.9.128/27 is directly connected, Serial0/0/0
C       192.168.9.160/27 is directly connected, Serial0/0/1
C       192.168.9.192/27 is directly connected, FastEthernet0/1

Branch 1 Router

Router>sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route
Gateway of last resort is 0.0.0.0 to network 0.0.0.0
     192.168.9.0/27 is subnetted, 3 subnets
C       192.168.9.64 is directly connected, FastEthernet0/0
C       192.168.9.96 is directly connected, FastEthernet0/1
C       192.168.9.128 is directly connected, Serial0/0/0
S*   0.0.0.0/0 is directly connected, Serial0/0/0

Branch 2 Router

Router>sh ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
       i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
       * - candidate default, U - per-user static route, o - ODR
       P - periodic downloaded static route
Gateway of last resort is 0.0.0.0 to network 0.0.0.0
     192.168.9.0/27 is subnetted, 3 subnets
C       192.168.9.0 is directly connected, FastEthernet0/1
C       192.168.9.32 is directly connected, FastEthernet0/0
C       192.168.9.160 is directly connected, Serial0/0/1
S*   0.0.0.0/0 is directly connected, Serial0/0/1