c - unsigned short int と unsigned int の違い

Question

#include<stdio.h>
 int main()
 {
    unsigned  short int  x=-10;
    short int y=-10;
    unsigned int z=-10000000;
    int m=-10000000;

    printf("x=%d y=%d z=%d m=%d",x,y,z,m);
    return 0;
 }

出力=x=65526 y=-10 z=-10000000 m=-10000000

私の質問は、データ保持のシナリオとどのようにunsigned short int異なるかです。unsigned intつまり x=65526 where as z=-10000000 why x is not equal -10 where as z can hold any data、短いのは2バイトなのでtwos complement -10 is 65526、なぜ同じでcaseはないのですかz