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YA3N44124 (single ladder)

A3N44129 (parallel)

The whole set of single elevator outbound call (middle floor)

The whole set of single elevator outbound call (ground floor)

The whole set of single elevator outbound call (top floor)

Outbound call set (parallel) (middle layer)

Outbound call set (parallel) (bottom)

Outbound call set (parallel) (top layer)