Let x0 of type ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι) be given.
Let x1 of type ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι) be given.
Apply H0 with
λ x2 : ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → (ι → ι) → ι → ι . ChurchNums_8x3_to_3_lt7_id_ge7_rot2 (ChurchNums_8_perm_4_5_6_7_0_1_2_3 x1) (ChurchNums_8x3_to_3_lt4_id_ge4_rot2 x1 x2) = ChurchNums_8x3_to_3_lt3_id_ge3_rot2 x1 x2 leaving 3 subgoals.
Apply H1 with
λ x2 : ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → (ι → ι) → ι → ι . ChurchNums_8x3_to_3_lt7_id_ge7_rot2 (ChurchNums_8_perm_4_5_6_7_0_1_2_3 x2) (ChurchNums_8x3_to_3_lt4_id_ge4_rot2 x2 (λ x3 x4 x5 : (ι → ι) → ι → ι . x3)) = ChurchNums_8x3_to_3_lt3_id_ge3_rot2 x2 (λ x3 x4 x5 : (ι → ι) → ι → ι . x3) leaving 8 subgoals.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Apply H1 with
λ x2 : ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → (ι → ι) → ι → ι . ChurchNums_8x3_to_3_lt7_id_ge7_rot2 (ChurchNums_8_perm_4_5_6_7_0_1_2_3 x2) (ChurchNums_8x3_to_3_lt4_id_ge4_rot2 x2 (λ x3 x4 x5 : (ι → ι) → ι → ι . x4)) = ChurchNums_8x3_to_3_lt3_id_ge3_rot2 x2 (λ x3 x4 x5 : (ι → ι) → ι → ι . x4) leaving 8 subgoals.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.
The subproof is completed by applying H2.
Let x2 of type (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → (((ι → ι) → ι → ι) → ((ι → ι) → ι → ι) → CN (ι → ι)) → ο be given.