apologise, I noted I made a mistake in my previous message:
pair_style hybrid lj/cut 1.12246152962189 morse 1.5
pair_modify shift yes
pair_coeff 1 1 lj/cut 1.0 1.0
pair_coeff 2 2 lj/cut 1.0 1.0
pair_coeff 3 3 lj/cut 1.0 1.0
pair_coeff 4 4 lj/cut 1.0 1.0
pair_coeff 5 5 lj/cut 1.0 1.0
pair_coeff 6 6 lj/cut 1.0 1.0
pair_coeff 7 7 lj/cut 1.0 1.0
pair_coeff 8 8 lj/cut 1.0 1.0
pair_coeff 9 9 lj/cut 1.0 1.0
pair_coeff 10 10 lj/cut 1.0 1.0
pair_coeff 11 11 morse 100.0 2.0 1.1 2.0
pair_coeff 1*10 11 lj/cut 1.0 1.0