xx-end
EG-xx
iy-FP
iy-qc
AB-end
yi-KG
KG-xx
start-LS
qe-FP
qc-AB
yi-start
AB-iy
FP-start
iy-LS
yi-LS
xx-AB
end-KG
iy-KG
qc-KG
FP-xx
LS-qc
FP-yi