Apply H1 with
λ x2 : ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι → ι . TwoRamseyGraph_4_4_Church17 (λ x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14 x15 x16 x17 x18 x19 . x3) x2 = TwoRamseyGraph_4_4_Church17 (Church17_perm_14_15_16_0_1_2_3_4_5_6_7_8_9_10_11_12_13 (λ x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14 x15 x16 x17 x18 x19 . x3)) (Church17_perm_14_15_16_0_1_2_3_4_5_6_7_8_9_10_11_12_13 x2) leaving 17 subgoals.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (ι → ι → ι) → (ι → ι → ι) → ο be given.
Assume H2:
x2 (TwoRamseyGraph_4_4_Church17 (λ x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14 x15 x16 x17 x18 x19 . x3) (λ x3 x4 x5 x6 x7 x8 x9 x10 x11 x12 x13 x14 x15 x16 x17 x18 x19 . x17)) ....