C11111333133313232233133313331333133313231312111133132212111113331323211321   >>    C1111133313331323223313331333133313331323131211113313221211111333132321132   <<    C11111333133313232233133313331333133313231312111133132212111113331323211323   >>      C11111333133313232233133313331333133313231312111133132212111113331323211322   >>