---/../../
...[3d]
-Do- . [Dec] . ^A^ . *He* .
[Dec] . ^A^ . .*He* .
^A^ . .*He* .
+He+ .
----[4D]
---/../../
...[3d]
-Do- . [Dec] . ^A^ . *He* . . *He* . ^A^ . [Dec]- . -Do-
[Dec] . ^A^ . .*He* . . .*He* . ^A^ . [Dec]
^A^ . .*He* . . .*He* . ^A^
+He+ . . . *He*
---/../../
...[3d]
-Do- . [Dec] . ^A^ . *He* .
[Dec] . ^A^ . .*He* .
^A^ . .*He* .
+He+ .