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!…

after: eleven, sixteen, nineteen, fifteen, thirteen, eighteen, twelve, fourteen, seventeenbefore: fifteen, twelve, ten, sixteen, eleven, thirteen, seventeen, fourteen, nine, eighteen.