MKKK -> MKKK_P
MKKK_P -> MKKK
MKK -> MKK_P
MKK_P -> MKK_PP
MKK_PP -> MKK_P
MKK_P -> MKK
MAPK -> MAPK_P
MAPK_P -> MAPK_PP
MAPK_PP -> MAPK_P
MAPK_P -> MAPK