To arrange in working order.
To furnish with organs; to give an organic structure to; to endow with capacity for the functions of life
To constitute in parts, each having a special function, act, office, or relation; to systematize.
To sing in parts.
To band together into a group or union that can bargain and act collectively; to unionize.
To sort or arrange beforehand.
To order (goods or services) in advance, before they are available.
A binary relation that is reflexive and transitive.
An order for goods or services placed in advance.
Such that, recursively, the root is visited before the left and right subtrees.