THE DAILY CONNECTIONS CHALLENGE

C: Array ( [0] => MAIL-BEACH-HANDS-METEOR-4 [1] => STORM-PILOT-MEAL-CARROT-3 [2] => DOG-COYOTE-FLY-TIGER-1 [3] => IRON-COFFEE-RAIN-BOTTLE-2 [4] => FIRE-FATHER-PAIR-SNACK-2 [5] => CHESS-WHEAT-LIQUOR-TOOL-5 [6] => CAR-LEGS-TICKET-BARN-1 [7] => ANIMAL-PLANT-DOCTOR-SCHOOL-1 [8] => GARDEN-SWEET-FLAT-BUILDING-1 [9] => BEETS-LIME-PEACH-ROSE-4 [10] => GOAT-CRICKET-CROW-HAMSTER-3 [11] => PEN-WINTER-WIND-CLIMB-4 [12] => KING-SINGER-ONION-PATIENT-3 [13] => HAT-SUBWAY-ARMS-SILVER-4 [14] => SEWER-LEATHER-BLUE-TEA-3 [15] => PIE-FURNITURE-CARD-COMMUNITY-4 [16] => DAY-CACTUS-GUM-BLOUSE-4 [17] => DOLL-INSTRUMENT-SPACE-PASSENGER-4 )
Array ( [0] => MAIL [1] => BEACH [2] => HANDS [3] => METEOR [4] => STORM [5] => PILOT [6] => MEAL [7] => CARROT [8] => DOG [9] => COYOTE [10] => FLY [11] => TIGER [12] => IRON [13] => COFFEE [14] => RAIN [15] => BOTTLE [16] => FIRE [17] => FATHER [18] => PAIR [19] => SNACK [20] => CHESS [21] => WHEAT [22] => LIQUOR [23] => TOOL [24] => CAR [25] => LEGS [26] => TICKET [27] => BARN [28] => ANIMAL [29] => PLANT [30] => DOCTOR [31] => SCHOOL [32] => GARDEN [33] => SWEET [34] => FLAT [35] => BUILDING [36] => BEETS [37] => LIME [38] => PEACH [39] => ROSE [40] => GOAT [41] => CRICKET [42] => CROW [43] => HAMSTER [44] => PEN [45] => WINTER [46] => WIND [47] => CLIMB [48] => KING [49] => SINGER [50] => ONION [51] => PATIENT [52] => HAT [53] => SUBWAY [54] => ARMS [55] => SILVER [56] => SEWER [57] => LEATHER [58] => BLUE [59] => TEA [60] => PIE [61] => FURNITURE [62] => CARD [63] => COMMUNITY [64] => DAY [65] => CACTUS [66] => GUM [67] => BLOUSE [68] => DOLL [69] => INSTRUMENT [70] => SPACE [71] => PASSENGER )
M: FRONTIER = Array ( [0] => SPACE ) DOLL-INSTRUMENT-SPACE-PASSENGER-4