Classification target LinkedIn Crossclimb #789. Ladder width: 4. Middle samples: WAVY, WARY, WARN, BARN, BERN. Combo label: "A two-word phrase for a legume named for a military branch.". Full chain: NAVY → WAVY → WARY → WARN → BARN → BERN → BEAN.
Middle phase answers: "Having an undulating pattern, like a sine curve" = WAVY; "On guard against danger" = WARY; "Give a heads-up" = WARN; "Place where pitchforks are kept" = BARN; "Switzerland's de facto capital" = BERN.
Ordering phase: the valid middle chain is WAVY → WARY → WARN → BARN → BERN. This permutation is the only valid one-letter chain for these answers.
Transition 1: N→W at the first letter (NAVY → WAVY).
Transition 2: V→R at the third letter (WAVY → WARY).
Transition 3: Y→N at the fourth letter (WARY → WARN).
Transition 4: W→B at the first letter (WARN → BARN).
Transition 5: A→E at the second letter (BARN → BERN).
Transition 6: R→A at the third letter (BERN → BEAN).
Ladder result: NAVY → WAVY → WARY → WARN → BARN → BERN → BEAN. Classification: unique middle order.