Keeping C2
Keeping D2
Happy person: +C2,-D1
Happy person: +C2,-D1
Happy person: +D2,-C1
Happy person: +D2,-C3

Keeping C1
Keeping D3
Happy person: +C1,-D1
Happy person: +C1,-D1
Happy person: +C1,-D1
Happy person: +C1,-D1
Happy person: +D3,-C2
Happy person: +D3,-C2
Happy person: +D3,-C2
Happy person: +D3,-C2

Keeping C2
Keeping C5
Keeping D2
Keeping D3
Keeping D5
Happy person: +C2,-D4
Happy person: +D2,-C3
Happy person: +D3,-C1
Happy person: +C5,-D4
Happy person: +D3,-C4
Happy person: +C2,-D1
Happy person: +D5,-C4