-----7-----------7----------7----------------|
-7h8---8----5h7----7----3h5---5--------------|
---------------------------------------------| x3
---------------------------------------------|
---------------------------------------------|
---------------------------------------------|

-----7-----------7---------------------------|
-7h8---8----5h7----7----3h5~~ ---------------|
---------------------------------------------| x1
---------------------------------------------|
---------------------------------------------|
---------------------------------------------|

(dist)
---------------------------------------------|
-8-8-8--7-7-7--5-5-5~--5-5-------------------|
-9-9-9--7-7-7--5-5-5~--5-5-------------------| x2
-9-9-9--7-7-7--5-5-5~--5-5-------------------|
---------------------------------------------|
---------------------------------------------|

---------------------------------------------|
----8-----8---------7-----------5------------|
-9-----9-----9--7-7---7-7---5-------5~\7\9---|
---------------------------------------------|
---------------------------------------------|
---------------------------------------------|

---------------------------------------------|
----8-----8---------7------------------------|
-9-----9-----9--7-7---7-7---5~~--------------|
---------------------------------------------|
---------------------------------------------|
---------------------------------------------|