KEX12(B)C C C,KEY TRAPPED EXCHANGE UNIT
KEX12(B)D D D,KEY TRAPPED EXCHANGE UNIT
KEX12(C)A A A,KEY TRAPPED EXCHANGE UNIT
KEX12(C)D D D,KEY TRAPPED EXCHANGE UNIT
KEX12(D)E E E,KEY TRAPPED EXCHANGE UNIT
KEX12(D)G G G,KEY TRAPPED EXCHANGE UNIT
KEX12(E)F F F,KEY TRAPPED EXCHANGE UNIT
KEX12(F)E E E,KEY TRAPPED EXCHANGE UNIT