Sf-Sh is for

Shibari 縛り
'to bind' This word can be used for tying anything, however it is widely used to rope bondage following the rope patterns and styles established in Japan.

Shibaru 縛る
'Tie/Bind' with rope. In many ways this is a more useful and specific term than Shibari which refers simply to binding, however the use of the word Shibari is now firmly established.

Shinju shibari 真珠縛り
'pearls tie' pearls is used as euphemism for breasts, this phrase refers to breast bondage.