Dick had a dog,
the dog dug,
the dog dug deep,
how deep did Dick's dog dig?
Dick had a duck,
the duck dived,
the duck dived deep,
how deep did Dick's duck dive?
Dick's duck dived as deep as Dick's dog dug!
崩溃型: When a doctor gets sick and another doctor doctors him, does the doctor doing the doctoring have to doctor the doctor the way the doctor being doctored wants to be doctored, or does the doctor doing the doctoring of the doctor doctor the doctor as he wants to do the doctoring?