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Informal description: ""

{λ[a:Prop] .​ λ[b:Prop] .​ λ[c:Prop] .​ λ[a1:{(c) .​ (b) .​ (a)} .​ and3 ]} .​ <{(b) .​ (a)} .​ and > .​ {({(a1) .​ (c) .​ (b) .​ (a)} .​ and3e2 ) .​ ({(a1) .​ (c) .​ (b) .​ (a)} .​ and3e1 ) .​ (b) .​ (a)} .​ andi

Validation parameters: sort hierarchy = "Z2", kernel options = ""