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However, sometimes there may be situations when rival units collide with each other during wheel maneuver

Model size and contact

Model size determines how many models can be in contact with one model 

There are 2 model size types in DO: regular and large

regular-size model is any model from human to horsemen and it can be surrounded up to 4 regular-size models and up to ? large-size models

large-size model is usually a monster like troll or giant scorpion and can be surrounded up to 6 (8?) regular-size models and up to ? large-size models