IMSGHMF1GGSM GGSM GGSM paths HMF1n GGSMi pathvHMF1RTSC TNPB  TNPB 4 TNPB ] LOOB LOOBnamecoinpointA@@AAXBXBApoint in)\)B@@q=ZAq=ZAXBXB)\)Bpoint outq=ZA@@)\)B)\)BXBXBq=ZAconnectedpath closedHMF1RTSCTNPB0 TNPB0J TNPB0 LOOB LOOBname metacarpalpointAAABA