C1111233131211111211113313331333133313331322322331323132211211321   >>    C111123313121111121111331333133313331333132232233132313221121132   <<    C1111233131211111211113313331333133313331322322331323132211211323   >>      C1111233131211111211113313331333133313331322322331323132211211322   >>