/summon ArmorStand ~5 ~ ~ {CustomName:A,CustomNameVisible:1,NoGravity:1}
/summon ArmorStand ~-5 ~ ~ {CustomName:B,CustomNameVisible:1,NoGravity:1}
/execute @e[type=ArmorStand,name=A] ~ ~ ~ /summon ArmorStand ~ ~ ~ {CustomName:C,CustomNameVisible:1,NoGravity:1,Equipment:[{id:stone,Count:1},{},{},{},{}]}
/tp @e[type=ArmorStand,name=C] @e[type=ArmorStand,name=B]
/tp @e[type=ArmorStand,name=C] ~ ~5 ~
/execute @e[type=ArmorStand,name=C] ~ ~ ~ /summon ArmorStand ~ ~ ~ {CustomName:Here is C,CustomNameVisible:1,NoGravity:1}