C31313132333131133132233132233132213233313231323133211331323211   >>    C3131313233313113313223313223313221323331323132313321133132321   <<    C31313132333131133132233132233132213233313231323133211331323213   >>      C31313132333131133132233132233132213233313231323133211331323212   >>