C31313132333131133132233132233132213233313231323133211331323121121   >>    C3131313233313113313223313223313221323331323132313321133132312112   <<    C31313132333131133132233132233132213233313231323133211331323121123   >>      C31313132333131133132233132233132213233313231323133211331323121122   >>