what number comes:

after:10,15,18,14,12,17,11,13,16;

before: 16,13,11,17,12,14,18,15,10,19?

У меня не получается решить !!!

Помогите пожалуйста !!!!

after: eleven, sixteen, nineteen, fifteen, thirteen, eighteen, twelve, fourteen, seventeen

before: fifteen, twelve, ten, sixteen, eleven, thirteen, seventeen, fourteen, nine, eighteen.

after:

after 10 comes eleven

after 15 comes sixteen

after 18 comes nineteen

after 14 comes fifteen

after 12 comes thirteen

after 17 comes eighteen

after 11comes twelve

after 13 comes fourteen

after 16 comes seventeen

before:

before 16 comes fifteen

before 13 comes twelve

before 11 comes ten

before 17 comes sixteen

before 12 comes eleven

before 14 comes thirteen

before 18 comes seventeen

before 15 comes fourteen

before 10 comes nine

before 19 comes eighteen.