C312322331333132212111133133313331323132322331333133312111113212121   >>    C31232233133313221211113313331333132313232233133313331211111321212   <<    C312322331333132212111133133313331323132322331333133312111113212123   >>      C312322331333132212111133133313331323132322331333133312111113212122   >>