0 -> Mb
0 -> Bc
Mb -> 0
Bc -> Bcp
Bc <-> Bn
0 -> Cc
Mc -> 0
Cc -> Ccp
Ccp -> 0
0 -> Mp
0 -> Pc
Pcp -> 0
Pc -> Pcp
Cc + Pc <-> PCc
PCc -> PCcp
PCcp -> 0
PCc <-> PCn
PCnp -> 0
Bcp -> 0
Bnp -> 0
0 -> Mc
PCn -> PCnp
Mp -> 0
Bn + PCn <-> In
Mb -> 0
Mc -> 0
Mp -> 0
Pc -> 0
Cc -> 0
Pcp -> 0
Ccp -> 0
PCcp -> 0
PCc -> 0
PCnp -> 0
Bc -> 0
Bcp -> 0
Bn -> Bnp
Bnp -> 0
In -> 0
In -> 0
Bn -> 0
Bcp -> Bc
Bnp -> Bn
Ccp -> Cc
Pcp -> Pc
PCnp -> PCn
PCn -> 0
PCcp -> PCc
0 -> Mr
Mr -> 0
Mr -> 0
0 -> Rc
Rc <-> Rn
Rc -> 0
Rc -> 0
Rn -> 0
Rn -> 0